Most recently Design of Steel Structures Multiple choice Questions and Answers pdf

41.    Shear buckling of web in a plate girder is prevented by using
a)    vertical intermediate stiffener
b)    horizontal stiffener at neutral axis
c)    bearing stiffener
d)    none of the above

Ans: a

42.    Horizontal stiffener in a plate girder is provided to safeguard against
a)    shear buckling of web plate
b)    compression buckling of web plate
c)    yielding
d)    all of the above

Ans: b

43.    Minimum thickness of web in a plate girder, when the plate is accessible and also exposed to weather, is
a)    5 mm
b)    6 mm
c)    8 mm
d)    10mm

Ans: b

44. The web crippling due to excessive bearing stress can be avoided by

a)    increasing the web thickness
b)    providing suitable stiffeners
c)    increasing the length of the bearing plates
d)    none of the above

Ans: c

45.   As per IS : 800, for compression flange, the out stand of flange plates should not exceed
a)    121
b)    161
c)    201
d)    251
where t = thickness of thinnest flange plate

Ans: b

46.    Intermediate vertical stiffeners in a plate girder need be provided if the depth of web exceeds
a)    501
b)    851
c)    200t
d)    2501
where t is thickness of web

Ans: b

47.    Bearing stiffener in a plate girder is used to
a)    transfer the load from the top flange to the bottom one
b)    prevent buckling of web
c)    decrease the effective depth of web
d)    prevent excessive deflection

Ans: b

48.    The forces acting on the web splice of a plate girder are
a)    axial forces
b)    shear and axial forces
c)    shear and bending forces
d)    axial and bending forces

Ans: c

49.    Gantry girders are designed to resist
a)    lateral loads
b)    longitudinal loads and vertical loads
c)    lateral, longitudinal and vertical loads
d)    lateral and longitudinal loads

Ans: c

50.    Minimum spacing of vertical stiffeners is limited to
a)    d/4
b)    d/3
c)    d/2
d)    2d/3
where d is the distance between flange angles